What is the CVSS score of CVE-2026-33311?

CVE-2026-33311 has a CVSS 3.1 base score of 4.7 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 3.0%.

How to fix or mitigate CVE-2026-33311?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

CVE-2026-33311

EUVD-2026-14182 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-19 https://github.com/dicebear/dicebear

GHSA-37g4-qqqv-7m99

GHSA-47cr-f226-r4pq

GHSA-7r28-6j42-p3gg

GHSA-mr3j-p26x-72x4

GHSA-mr9r-mww3-v6gv

GHSA-q485-cg9q-xq2r

GHSA-vq4q-79hh-q767

GHSA-w5ff-2mjc-4phc

XSS

4.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.7 MEDIUM

AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

EUVD ID Assigned

Mar 19, 2026 - 18:00 euvd

EUVD-2026-14182

Analysis Generated

Mar 19, 2026 - 18:00 vuln.today

CVE Published

Mar 19, 2026 - 17:49 nvd

MEDIUM 4.7

DescriptionGitHub Advisory

Summary

SVG attribute values derived from user-supplied options (backgroundColor, fontFamily, textColor) were not XML-escaped before interpolation into SVG output. This could allow Cross-Site Scripting (XSS) when applications pass untrusted input to createAvatar() and serve the resulting SVG inline or with Content-Type: image/svg+xml.

Affected packages

@dicebear/core - backgroundColor option values interpolated into SVG attributes without escaping (affects solid and gradientLinear background types)
@dicebear/initials - fontFamily and textColor option values interpolated into SVG attributes without escaping

Fix

All affected SVG attribute values are now properly escaped using XML entity encoding. Users should upgrade to the listed patched versions.

Mitigating factors

Applications that validate input against the library's JSON Schema before passing it to createAvatar() are not affected
The DiceBear CLI validates input via AJV and was not vulnerable
Exploitation requires that an application passes untrusted, unvalidated external input directly as option values

AnalysisAI

DiceBear avatar generation libraries (@dicebear/core and @dicebear/initials) are vulnerable to stored XSS through unescaped SVG attributes when user-supplied options like backgroundColor, fontFamily, and textColor are directly interpolated into SVG output. Attackers can inject malicious JavaScript that executes when the resulting SVG is rendered inline or served with SVG content-type, affecting any application that passes untrusted input to the createAvatar() function. No patch is currently available.